That's how YouTube does it, because YouTube is a channel for individuals to share their own content. Wikipedia, on the other hand, requires CC-BY-SA/GFDL licensing, because Wikipedia is a project to develop a knowledge base.
The question is whether StackOverflow is closer to YouTube or Wikipedia. I think it's closer to Wikipedia because it's a curated reference source, not just a medium for self-expression.
The question is whether StackOverflow is closer to YouTube or Wikipedia. I think it's closer to Wikipedia because it's a curated reference source, not just a medium for self-expression.